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Vishay General Semiconductor - Diodes Division 1.5KE47CAHE3_A/C
- Part No.:
- 1.5KE47CAHE3_A/C
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE47CAHE3_A/C.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:8,520
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Product details
Overview
1.5KE47CAHE3_A/C from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 47 V breakdown voltage (VBR = 44.7–49.4 V at 1.0 mA), 1500 W peak pulse power (10/1000 µs), clamping voltage of 64.8 V at 23.1 A, and operates across –55 °C to +175 °C. It is used to protect MOSFETs, ICs, and sensor interfaces against lightning-induced surges and inductive switching transients in automotive and industrial systems.
For engineers reviewing the 1.5KE47CAHE3_A/C datasheet, 1.5KE47CAHE3_A/C pinout, 1.5KE47CAHE3_A/C application, or 1.5KE47CAHE3_A/C equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, clamping performance under standardized surge waveforms, thermal resistance data (RθJL = 15.4 °C/W), and RoHS-compliant packaging details - all confirmed from Vishay's official 88301 specification document.
Technical Context
This bidirectional TVS diode uses a glass-passivated silicon junction to achieve sub-nanosecond response time (<1 ns) and low incremental surge resistance. Its symmetrical clamping behavior applies equally in both polarities, with no polarity marking on the case - distinguishing it from unidirectional variants that feature a cathode band.
The device is rated for 1500 W peak pulse power per 10/1000 µs waveform at 0.01 % duty cycle, with derating above 25 °C ambient per Figure 2. It supports repetitive surge events when thermally managed via its low RθJL and meets JESD 22-B106 solderability (275 °C, 10 s) and JESD 201 Class 2 whisker resistance (HE3 suffix).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 44.7 V / 49.4 V at 1.0 mA - defines precise voltage threshold where clamping initiates in either direction |
| VWM | 40.2 V - maximum continuous reverse working voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 64.8 V at 23.1 A - clamped voltage during full 1500 W transient, limiting stress on downstream components |
| PPPM | 1500 W - peak surge power handling capability using standard 10/1000 µs waveform |
| TJ range | –55 °C to +175 °C - enables deployment in under-hood automotive and high-temperature industrial environments |
| RθJL | 15.4 °C/W - low junction-to-lead thermal resistance supports reliable power dissipation without heatsinking |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
Package: Case Style 1.5KE - molded epoxy body with matte tin-plated leads; UL 94 V-0 rated; lead length 0.375" (9.5 mm); RoHS compliant and AEC-Q101 qualified (HE3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional terminal pair | No polarity marking; terminals are functionally identical - connects across protected line and ground or differential pair |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure |
| 1500 W peak pulse rating | Withstands high-energy transients from load dump or lightning coupling without degradation |
| Sub-nanosecond response | Clamps within <1 ns - faster than MOVs or polymer-based protectors - preserving signal integrity |
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage overshoot during surge events, reducing risk of downstream component failure |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V power rails in engine control modules against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS placed between supply rail and chassis ground to clamp positive and negative transients. Use Value: Limits rail voltage to ≤64.8 V during 1500 W surges, preventing damage to microcontrollers and CAN transceivers. |
Use Scenario: Safeguarding analog outputs (e.g., 4–20 mA loops) and digital I/O of PLC input modules exposed to field wiring surges. IC Role / Device Role / Timing Role: Connected across signal and return lines to suppress common-mode transients induced by nearby motor switching. Use Value: Maintains signal fidelity with <1 ns response and low leakage (<1.0 µA at 40.2 V), avoiding measurement drift. |
| Telecom Line Surge Protection | Consumer Device DC Input Protection |
Use Scenario: Shielding Ethernet PHY power pins and auxiliary bias rails in PoE-powered switches from lightning-induced surges on cabling. IC Role / Device Role / Timing Role: Placed at board edge between DC input and local regulation stage to absorb coupled energy before LDOs or DC/DC converters. Use Value: Withstands repeated 10/1000 µs transients up to 23.1 A while maintaining VWM margin (40.2 V) above nominal 36 V PoE+ supply. |
Use Scenario: Hardening USB-C or barrel jack DC inputs in smart home hubs and audio equipment against ESD and accidental AC misconnection. IC Role / Device Role / Timing Role: First-line defense in series with input fuse, shunting surge current away from upstream capacitors and regulators. Use Value: Clamps 8/20 µs surges to ≤64.8 V within nanoseconds, preventing capacitor overvoltage and regulator latch-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ45CA | Lower peak power (600 W), smaller SMB package (vs. DO-201AB), VC = 73.5 V at 8.2 A | Better suited for space-constrained PCBs with lower surge energy requirements (e.g., consumer USB ports) | Select when board area is critical and surge threat level is ≤600 W; verify thermal margin due to higher RθJA. |
| 1.5SMC47CA | Same 1500 W rating and 47 V VBR, but SMC package (smaller footprint, higher RθJA = 110 °C/W) | Preferred for automated assembly and moderate-power industrial I/O cards where DO-201AB lead spacing is incompatible | Choose for reflow-compatible designs needing identical electrical specs but smaller form factor; ensure adequate copper pour for thermal relief. |
Compared with 1.5KE47CAHE3_A/C, SMBJ45CA offers reduced size and cost at the expense of surge capacity and thermal robustness, while 1.5SMC47CA matches power and voltage ratings but trades leaded mechanical stability for surface-mount compatibility - making each suitable for distinct layout and reliability priorities.
Availability
1.5KE47CAHE3_A/C is available at Aetrix Electronics and suitable for automotive power line protection, industrial sensor interface hardening, and telecom surge suppression requiring stable component supply, AEC-Q101 compliance, and 1500 W transient immunity.
Supply support for 1.5KE47CAHE3_A/C includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, and protection devices with emphasis on reliability, efficiency, and application-specific validation.
The 1.5KE family was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure modes demand proven surge endurance and thermal resilience.
FAQ
What is the breakdown voltage tolerance for 1.5KE47CAHE3_A/C?
The 1.5KE47CAHE3_A/C has a specified breakdown voltage range of 44.7 V to 49.4 V at 1.0 mA test current, corresponding to ±10 % tolerance around the nominal 47 V rating. This tight VBR window ensures consistent clamping onset across production lots and supports predictable system-level overvoltage margining in designs using 1.5KE47CAHE3_A/C.
Is 1.5KE47CAHE3_A/C suitable for automotive applications?
Yes, 1.5KE47CAHE3_A/C is AEC-Q101 qualified (per documentation note on page 3), confirming compliance with stress tests including temperature cycling, high-temperature reverse bias, and ESD. Its –55 °C to +175 °C operating range and 1500 W surge capability make it appropriate for under-hood ECUs, body control modules, and ADAS sensor power rails where 1.5KE47CAHE3_A/C provides certified transient protection.
How does the clamping voltage of 1.5KE47CAHE3_A/C compare to its breakdown voltage?
The 1.5KE47CAHE3_A/C clamps at 64.8 V when subjected to its full 23.1 A peak pulse current (10/1000 µs), yielding a clamping ratio (VC/VBR) of approximately 1.38. This low ratio indicates efficient voltage limiting - critical for protecting 48 V-tolerant ICs and ensuring that downstream components experience minimal overvoltage stress during surge events involving 1.5KE47CAHE3_A/C.
What is the maximum steady-state power dissipation for 1.5KE47CAHE3_A/C?
The 1.5KE47CAHE3_A/C has a maximum steady-state power dissipation (PD) of 6.5 W when mounted on an infinite heatsink at lead temperature (TL) = 75 °C. This rating reflects continuous DC or low-duty-cycle operation - distinct from its 1500 W peak pulse capability - and must be applied with thermal derating above 25 °C ambient per Figure 5 in the Vishay 88301 datasheet for safe use of 1.5KE47CAHE3_A/C.
Does 1.5KE47CAHE3_A/C have polarity markings on the package?
No, 1.5KE47CAHE3_A/C is a bidirectional TVS diode and carries no polarity marking - unlike unidirectional variants (e.g., 1.5KE47A) which feature a cathode band. Its symmetrical construction allows installation in either orientation across protected lines, simplifying layout and eliminating orientation errors during assembly of circuits using 1.5KE47CAHE3_A/C.
1.5KE47CAHE3_A/C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 40.2V
- Voltage - Breakdown (Min):
- 44.7V
- Voltage - Clamping (Max) @ Ipp:
- 64.8V
- Current - Peak Pulse (10/1000µs):
- 23.1A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE47CAHE3_A/C FAQ
1.How can I place an order for 1.5KE47CAHE3_A/C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE47CAHE3_A/C on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 1.5KE47CAHE3_A/C reliable?
The price and inventory of 1.5KE47CAHE3_A/C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE47CAHE3_A/C is usually 5 days.
3.What payment methods are accepted for 1.5KE47CAHE3_A/C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE47CAHE3_A/C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE47CAHE3_A/C?
1.5KE47CAHE3_A/C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE47CAHE3_A/C order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 1.5KE47CAHE3_A/C?
For technical support, including 1.5KE47CAHE3_A/C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE47CAHE3_A/C requirements.
6.How does Aetrix verify that 1.5KE47CAHE3_A/C is sourced from the original manufacturer or authorized distributors?
All 1.5KE47CAHE3_A/C products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 1.5KE47CAHE3_A/C meets industry standards.
7.What is the process for return or replacement of 1.5KE47CAHE3_A/C?
All 1.5KE47CAHE3_A/C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE47CAHE3_A/C, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 1.5KE47CAHE3_A/C part is unused and in its original packaging.
Return procedure for 1.5KE47CAHE3_A/C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE47CAHE3_A/C Tags
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